Recent comments in /f/space
[deleted] t1_je1koin wrote
[removed]
DropKickDougie t1_je1knu7 wrote
Reply to comment by raishak in Could Hawking radiation coming from black holes be the same as the dark energy accelerating expansion of the universe? by Rskingen
It's still theoretical but that theory came from observation. The result of these effects is what we call Hawking radiation.
loulan t1_je1kive wrote
Reply to comment by clayt6 in Fast radio burst linked with gravitational waves for the first time by spsheridan
I have a permanent research position myself (not in astronomy) and I sure hope people take what I say on reddit with a grain of salt, even when it's in my field haha.
The comment above just sounded way too convinced to me. Especially since they obviously read the comment, but not the paper...
Food_Library333 t1_je1kc0j wrote
Reply to comment by Andromeda321 in Fast radio burst linked with gravitational waves for the first time by spsheridan
Thank you for clarification!
LunaticBZ t1_je1k6yh wrote
Reply to Space Force should prepare for the threat we have — not the one we prefer | TheHill by Corbulo2526
Hypothetically say China and U.S. do even a tit for tat exchange and take out one of each other's satellites with an ASAT.
Given how much more we have in space these days I don't think it would take much at all to kick off Kessler Syndrome.
In the event of WWIII I think it's safe to assume that the space aspect of the war will be short lived. As it's all going to be shredded.
clayt6 t1_je1k2sj wrote
Reply to comment by loulan in Fast radio burst linked with gravitational waves for the first time by spsheridan
Just for the record, Andromeda321 is a postdoctoral fellow in astronomy at the Harvard-Smithsonian Center for Astrophysics who specializes in radio astronomy, so I really would take what she has to say seriously. The researchers behind this new study also acknowledge at the end of the article there's a 5% chance that the apparent connection between the FRB and the gravitational waves is entirely a coincidence, which is pretty darn significant (and possibly up for debate). I believe that's the main point she wanted to make.
If a causal connection is confirmed, these results are very intriguing and fascinating. But as is often the case in science, independent and more exhaustive confirmation is key before we get too excited.
With that being said, you're definitely not wrong to be skeptical of a seemingly random redditor's claim lol
AreYouUpsetFriend t1_je1jcyj wrote
Reply to comment by i-kno-nothing in More Water Found on Moon, Locked in Tiny Glass Beads by LanceOhio
Hey this is NASA. Are you interested in a position?
VesDoppelganger t1_je1j9ia wrote
Reply to Department of the Air Force Secretary: ‘Haven’t made a decision on U.S. Space Command’ by Corbulo2526
>These officials told investigators that renovating existing Space Command facilities at Peterson Space Force Base, Colorado, would allow the command to reach “full operational capability” faster than constructing a brand-new building in Huntsville and relocating a workforce of about 1,500 people.
This is the only answer to this stupid debate. Please bring those renovation dollars to a place that already holds the majority of personnel and work being done rather than reinventing the wheel, so to speak.
cnn t1_je1j3nf wrote
Trillions of pounds of water may be strewn across the moon, trapped in tiny glass beads that could have formed when asteroids struck the lunar surface, according to a new study. The findings, laid out in a study published Monday in the journal Nature Geoscience, were pieced together by scientists in China who analyzed the first lunar soil samples to be returned to Earth since the 1970s.
The research points to an answer for a question scientists have been pondering for years as they’ve attempted to pin down exactly how water is stored on the moon — especially in regions outside the lunar poles, where water ice may exist in greater abundance. Essentially, the study fills in some gaps in a theory about a lunar water cycle.“
To sustain a water cycle at the surface of the Moon, there should be a hydrated layer (reservoir) at depth in lunar soils,” according to the study. “However, finding this water reservoir has remained elusive, despite several studies having investigated the water inventory of fine mineral grains in lunar soils.”
https://www.cnn.com/2023/03/27/world/water-moon-lunar-sample-chang-e-5-scn
PatFluke t1_je1j12h wrote
Reply to comment by i-kno-nothing in More Water Found on Moon, Locked in Tiny Glass Beads by LanceOhio
Or! Hollow it out and spin it really fast! Now we can walk on the inside and keep the oxygen inside!
Not the just a hat rack my friends.
[deleted] t1_je1iyyf wrote
Reply to comment by [deleted] in More Water Found on Moon, Locked in Tiny Glass Beads by LanceOhio
[removed]
BeautifulTerror t1_je1ivq2 wrote
Reply to comment by Klin24 in Heads up: Five planets set to line up in night sky this week by davster39
Ditto up here in the bay 😭 I was really looking forward to this
[deleted] t1_je1ivnd wrote
[removed]
[deleted] t1_je1id3p wrote
Reply to comment by [deleted] in More Water Found on Moon, Locked in Tiny Glass Beads by LanceOhio
[removed]
spsheridan OP t1_je1i8ca wrote
Reply to comment by Andromeda321 in Fast radio burst linked with gravitational waves for the first time by spsheridan
This paper was submitted to and published by Nature Astronomy. Presumably, it was peer-reviewed before being published. If the probability of the FRB being associated with the gravitational wave is not much better than random chance, what does that say about the peer review process at Nature Astronomy? Is it broken?
Itdidnt_trickle_down t1_je1i3yc wrote
Reply to comment by uid_0 in Damaged Russian Soyuz Capsule Returns to Earth — Roscosmos by Newgripper1221
Even if they did you couldn't trust it.
[deleted] t1_je1i28l wrote
Reply to comment by [deleted] in Fast radio burst linked with gravitational waves for the first time by spsheridan
[removed]
Preshe8jaz OP t1_je1i04q wrote
Reply to comment by ferrel_hadley in Do satellites operate in groups for a reason? I’ve noticed that if I see a satellite, I will often see more near it. by Preshe8jaz
I usually see them shortly after dusk, but morning as well. I assumed it was bc I sleep from 10-6, but the Sun placement makes sense. Thanks for that tidbit. As far as groups, they are rarely in sequence. Sometimes I see two aligned and just offset. Usually they are flowing in generally the same N-S direction with one or two seconds behind the other. The E-W satellites seem much more rare. Pardon my ignorance. I have no formal training, just a Sky gazer and mediocre Googler.
LunaticBZ t1_je1hzbv wrote
Reply to Is Space-Based Solar Power An Option to Solve Humanity's Energy Hunger After All? by larsschellhas
Hey OP question have you watched Isaac Arthur's video on power satellites?
I don't remember how much detail the video goes into, but there's links in the description for more reading and sources usually
Personally I think we will do some power satellites for Earth, but I doubt it becoming a major power component. My view is based on a lot of assumptions about the future though.
Slamdutch t1_je1hte2 wrote
Reply to comment by Andromeda321 in Fast radio burst linked with gravitational waves for the first time by spsheridan
honestly one of GOAT reddit users
KilgoreTroutPfc t1_je1hnhi wrote
Reply to Could Hawking radiation coming from black holes be the same as the dark energy accelerating expansion of the universe? by Rskingen
There was a recent paper suggesting black holes contribute to dark energy, but there is dark energy even in the deepest voids of space hundreds of millions of light years from any black hole. It’s not the primary cause.
[deleted] t1_je1hnf2 wrote
Reply to comment by AndrekinKimawa in Fast radio burst linked with gravitational waves for the first time by spsheridan
[removed]
raishak t1_je1hk83 wrote
Reply to comment by DropKickDougie in Could Hawking radiation coming from black holes be the same as the dark energy accelerating expansion of the universe? by Rskingen
Unless there's some news, I missed I don't think we've measured Hawking Radiation (certainly not from a black hole). However, it is well defined mathematically and appears independently through several different approaches. I don't think anyone credible is disputing hawking radiation regardless.
[deleted] t1_je1hjp9 wrote
Reply to comment by i-kno-nothing in More Water Found on Moon, Locked in Tiny Glass Beads by LanceOhio
[removed]
[deleted] t1_je1ksy1 wrote
Reply to comment by [deleted] in More Water Found on Moon, Locked in Tiny Glass Beads by LanceOhio
[removed]